[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC vs.
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
14	# endif	25	# endif
15	# ifndef call_sv	26	# ifndef call_sv
16	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
54	# ifndef PAGESIZE	65	# ifndef PAGESIZE
55	# define PAGESIZE pagesize	66	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;	68	static long pagesize;
58	# else	69	# else
59	# define BOOT_PAGESIZE	70	# define BOOT_PAGESIZE (void)0
60	# endif	71	# endif
		72	#else
		73	# define PAGESIZE 0
		74	# define BOOT_PAGESIZE (void)0
61	#endif	75	#endif
62		76
63	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	78	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	79	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	80	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	81	#define STACKLEVEL ((void *)&stacklevel)
68		82
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		84
		85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
70		92
71	#include "CoroAPI.h"	93	#include "CoroAPI.h"
72		94
73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		96
…		…
84	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	107	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	108	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	109	static SV coro_mortal; / will be freed after next transfer */
88		110
		111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
89	/* this is a structure representing a c-level coroutine */	114	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	115	typedef struct coro_cctx {
91	struct coro_stack *next;	116	struct coro_cctx *next;
92		117
93	/* the stack */	118	/* the stack */
94	void *sptr;	119	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
96		121
97	/* cpu state */	122	/* cpu state */
98	void idle_sp; / original stacklevel when coroutine was created */	123	void idle_sp; / sp of top-level transfer/schedule/cede call */
99	JMPENV *top_env;	124	JMPENV *top_env;
100	coro_context cctx;	125	coro_context cctx;
101	} coro_stack;
102		126
103	/* the (fake) coro_stack representing the main program */	127	int inuse;
104	static coro_stack *main_stack;	128
		129	#if USE_VALGRIND
		130	int valgrind_id;
		131	#endif
		132	} coro_cctx;
		133
		134	enum {
		135	CF_RUNNING = 0x0001, /* coroutine is running */
		136	CF_READY = 0x0002, /* coroutine is ready */
		137	CF_NEW = 0x0004, /* ahs never been switched to */
		138	};
105		139
106	/* this is a structure representing a perl-level coroutine */	140	/* this is a structure representing a perl-level coroutine */
107	struct coro {	141	struct coro {
108	/* the c coroutine allocated to this perl coroutine, if any */	142	/* the c coroutine allocated to this perl coroutine, if any */
109	coro_stack *stack;	143	coro_cctx *cctx;
110		144
111	/* data associated with this coroutine (initial args) */	145	/* data associated with this coroutine (initial args) */
112	AV *args;	146	AV *args;
113	int refcnt;	147	int refcnt;
		148	int flags;
114		149
115	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
116	AV *defav;	151	AV *defav;
117	SV *defsv;	152	SV *defsv;
118	SV *errsv;	153	SV *errsv;
119		154
120	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
121	U8 dowarn;	156	# include "state.h"
122	I32 in_eval;	157	#undef VAR
123
124	/* the stacks and related info (callchain etc..) */
125	PERL_SI *curstackinfo;
126	AV *curstack;
127	AV *mainstack;
128	SV **stack_sp;
129	OP *op;
130	SV **curpad;
131	AV *comppad;
132	CV *compcv;
133	SV **stack_base;
134	SV **stack_max;
135	SV **tmps_stack;
136	I32 tmps_floor;
137	I32 tmps_ix;
138	I32 tmps_max;
139	I32 *markstack;
140	I32 *markstack_ptr;
141	I32 *markstack_max;
142	I32 *scopestack;
143	I32 scopestack_ix;
144	I32 scopestack_max;
145	ANY *savestack;
146	I32 savestack_ix;
147	I32 savestack_max;
148	OP **retstack;
149	I32 retstack_ix;
150	I32 retstack_max;
151	PMOP *curpm;
152	COP *curcop;
153		158
154	/* coro process data */	159	/* coro process data */
155	int prio;	160	int prio;
156	};	161	};
157		162
158	typedef struct coro *Coro__State;	163	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	164	typedef struct coro *Coro__State_or_hashref;
160		165
161	static AV *	166	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	167	coro_clone_padlist (CV *cv)
163	{	168	{
164	AV *padlist = CvPADLIST (cv);	169	AV *padlist = CvPADLIST (cv);
165	AV newpadlist, newpad;	170	AV newpadlist, newpad;
166		171
167	newpadlist = newAV ();	172	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	173	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	174	#if PERL_VERSION_ATLEAST (5,9,0)
		175	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		176	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	177	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	178	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	179	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	180	--AvFILLp (padlist);
176		181
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	182	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
179		184
180	return newpadlist;	185	return newpadlist;
181	}	186	}
182		187
183	static void	188	static void
184	free_padlist (pTHX_ AV *padlist)	189	free_padlist (AV *padlist)
185	{	190	{
186	/* may be during global destruction */	191	/* may be during global destruction */
187	if (SvREFCNT (padlist))	192	if (SvREFCNT (padlist))
188	{	193	{
189	I32 i = AvFILLp (padlist);	194	I32 i = AvFILLp (padlist);
…		…
210	AV *padlist;	215	AV *padlist;
211	AV av = (AV )mg->mg_obj;	216	AV av = (AV )mg->mg_obj;
212		217
213	/* casting is fun. */	218	/* casting is fun. */
214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
215	free_padlist (aTHX_ padlist);	220	free_padlist (padlist);
216		221
217	SvREFCNT_dec (av);	222	SvREFCNT_dec (av);
218		223
219	return 0;	224	return 0;
220	}	225	}
221		226
222	#define PERL_MAGIC_coro PERL_MAGIC_ext	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
223		228
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		230
		231	#define CORO_MAGIC(cv) \
		232	SvMAGIC (cv) \
		233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		234	? SvMAGIC (cv) \
		235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		236	: 0
		237
226	/* the next two functions merely cache the padlists */	238	/* the next two functions merely cache the padlists */
227	static void	239	static void
228	get_padlist (pTHX_ CV *cv)	240	get_padlist (CV *cv)
229	{	241	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	242	MAGIC *mg = CORO_MAGIC (cv);
		243	AV *av;
231		244
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
234	else	247	else
235	{	248	{
236	#if 0	249	#if 0
237	/* this should work - but it doesn't :( */	250	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	251	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	252	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	253	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	254	SvREFCNT_dec (cp);
242	#else	255	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	256	CvPADLIST (cv) = coro_clone_padlist (cv);
244	#endif	257	#endif
245	}	258	}
246	}	259	}
247		260
248	static void	261	static void
249	put_padlist (pTHX_ CV *cv)	262	put_padlist (CV *cv)
250	{	263	{
251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
252		266
253	if (!mg)	267	if (!mg)
254	{	268	{
255	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
256	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
257	mg->mg_virtual = &vtbl_coro;	271	mg->mg_virtual = &vtbl_coro;
258	mg->mg_obj = (SV *)newAV ();	272	mg->mg_obj = (SV *)newAV ();
259	}	273	}
260		274
261	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	275	av = (AV *)mg->mg_obj;
		276
		277	if (AvFILLp (av) >= AvMAX (av))
		278	av_extend (av, AvMAX (av) + 1);
		279
		280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
262	}	281	}
263		282
264	#define SB do {	283	#define SB do {
265	#define SE } while (0)	284	#define SE } while (0)
266		285
267	#define LOAD(state) load_state(aTHX_ (state));	286	#define LOAD(state) load_state ((state))
268	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
269		288
270	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
271		290
272	static void	291	static void
273	load_state(pTHX_ Coro__State c)	292	load_state (Coro__State c)
274	{	293	{
275	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
276	PL_in_eval = c->in_eval;	295	# include "state.h"
277		296	#undef VAR
278	PL_curstackinfo = c->curstackinfo;
279	PL_curstack = c->curstack;
280	PL_mainstack = c->mainstack;
281	PL_stack_sp = c->stack_sp;
282	PL_op = c->op;
283	PL_curpad = c->curpad;
284	PL_comppad = c->comppad;
285	PL_compcv = c->compcv;
286	PL_stack_base = c->stack_base;
287	PL_stack_max = c->stack_max;
288	PL_tmps_stack = c->tmps_stack;
289	PL_tmps_floor = c->tmps_floor;
290	PL_tmps_ix = c->tmps_ix;
291	PL_tmps_max = c->tmps_max;
292	PL_markstack = c->markstack;
293	PL_markstack_ptr = c->markstack_ptr;
294	PL_markstack_max = c->markstack_max;
295	PL_scopestack = c->scopestack;
296	PL_scopestack_ix = c->scopestack_ix;
297	PL_scopestack_max = c->scopestack_max;
298	PL_savestack = c->savestack;
299	PL_savestack_ix = c->savestack_ix;
300	PL_savestack_max = c->savestack_max;
301	#if PERL_VERSION < 9
302	PL_retstack = c->retstack;
303	PL_retstack_ix = c->retstack_ix;
304	PL_retstack_max = c->retstack_max;
305	#endif
306	PL_curpm = c->curpm;
307	PL_curcop = c->curcop;
308		297
309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
312		301
…		…
315	CV *cv;	304	CV *cv;
316		305
317	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
318	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
319	{	308	{
320	AV padlist = (AV )POPs;
321
322	if (padlist)
323	{
324	put_padlist (aTHX_ cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
325	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
326	}	311	CvPADLIST (cv) = (AV *)POPs;
327
328	++CvDEPTH(cv);
329	}	312	}
330		313
331	PUTBACK;	314	PUTBACK;
332	}	315	}
333	}	316	}
334		317
335	static void	318	static void
336	save_state(pTHX_ Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
337	{	320	{
338	{	321	{
339	dSP;	322	dSP;
340	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
352	{	335	{
353	while (cxix >= 0)	336	while (cxix >= 0)
354	{	337	{
355	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
356		339
357	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
358	{	341	{
359	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
360	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
361	{	345	{
362	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
363		347
364	while (--CvDEPTH(cv))
365	{
366	/* this tells the restore code to increment CvDEPTH */
367	PUSHs (Nullsv);
368	PUSHs ((SV *)cv);
369	}
370
371	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
372	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
373		351
		352	CvDEPTH (cv) = 0;
374	get_padlist (aTHX_ cv);	353	get_padlist (cv);
375	}	354	}
376	}	355	}
377	#ifdef CXt_FORMAT	356	#ifdef CXt_FORMAT
378	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
379	{	358	{
380	/* I never used formats, so how should I know how these are implemented? */	359	/* I never used formats, so how should I know how these are implemented? */
381	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
382	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
383	}	362	}
…		…
397		376
398	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
399	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
400	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
401		380
402	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
403	c->in_eval = PL_in_eval;	382	# include "state.h"
404		383	#undef VAR
405	c->curstackinfo = PL_curstackinfo;
406	c->curstack = PL_curstack;
407	c->mainstack = PL_mainstack;
408	c->stack_sp = PL_stack_sp;
409	c->op = PL_op;
410	c->curpad = PL_curpad;
411	c->comppad = PL_comppad;
412	c->compcv = PL_compcv;
413	c->stack_base = PL_stack_base;
414	c->stack_max = PL_stack_max;
415	c->tmps_stack = PL_tmps_stack;
416	c->tmps_floor = PL_tmps_floor;
417	c->tmps_ix = PL_tmps_ix;
418	c->tmps_max = PL_tmps_max;
419	c->markstack = PL_markstack;
420	c->markstack_ptr = PL_markstack_ptr;
421	c->markstack_max = PL_markstack_max;
422	c->scopestack = PL_scopestack;
423	c->scopestack_ix = PL_scopestack_ix;
424	c->scopestack_max = PL_scopestack_max;
425	c->savestack = PL_savestack;
426	c->savestack_ix = PL_savestack_ix;
427	c->savestack_max = PL_savestack_max;
428	#if PERL_VERSION < 9
429	c->retstack = PL_retstack;
430	c->retstack_ix = PL_retstack_ix;
431	c->retstack_max = PL_retstack_max;
432	#endif
433	c->curpm = PL_curpm;
434	c->curcop = PL_curcop;
435	}	384	}
436		385
437	/*	386	/*
438	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
439	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
440	* on the (sometimes correct) assumption that coroutines do	389	* on the (sometimes correct) assumption that coroutines do
441	* not usually need a lot of stackspace.	390	* not usually need a lot of stackspace.
442	*/	391	*/
443	static void	392	static void
444	coro_init_stacks (pTHX)	393	coro_init_stacks ()
445	{	394	{
446	LOCK;
447
448	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
449	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
450	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
451	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
452		399
453	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
454	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
455	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
456		403
457	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
458	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
459	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
460	PL_tmps_max = 96;	407	PL_tmps_max = 128;
461		408
462	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
463	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
464	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
465		412
466	#ifdef SET_MARK_OFFSET	413	#ifdef SET_MARK_OFFSET
467	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
468	#endif	415	#endif
469		416
470	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
471	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
472	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
473		420
474	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
475	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
476	PL_savestack_max = 96;	423	PL_savestack_max = 64;
477		424
478	#if PERL_VERSION < 9	425	#if !PERL_VERSION_ATLEAST (5,9,0)
479	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
480	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
481	PL_retstack_max = 8;	428	PL_retstack_max = 16;
482	#endif	429	#endif
483
484	UNLOCK;
485	}	430	}
486		431
487	/*	432	/*
488	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
489	*/	434	*/
490	static void	435	static void
491	destroy_stacks(pTHX)	436	coro_destroy_stacks ()
492	{	437	{
493	if (!IN_DESTRUCT)	438	if (!IN_DESTRUCT)
494	{	439	{
495	/* is this ugly, I ask? */	440	/* is this ugly, I ask? */
496	LEAVE_SCOPE (0);	441	LEAVE_SCOPE (0);
…		…
527		472
528	Safefree (PL_tmps_stack);	473	Safefree (PL_tmps_stack);
529	Safefree (PL_markstack);	474	Safefree (PL_markstack);
530	Safefree (PL_scopestack);	475	Safefree (PL_scopestack);
531	Safefree (PL_savestack);	476	Safefree (PL_savestack);
532	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
533	Safefree (PL_retstack);	478	Safefree (PL_retstack);
534	#endif	479	#endif
535	}	480	}
536		481
537	static void	482	static void
538	setup_coro (struct coro *coro)	483	setup_coro (struct coro *coro)
539	{	484	{
540	/*	485	/*
541	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
542	*/	487	*/
543	dTHX;
544	dSP;
545	UNOP myop;
546	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
547		488
548	coro_init_stacks (aTHX);	489	coro_init_stacks ();
549	/PL_curcop = 0;/	490
550	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_curcop = &PL_compiling;
		492	PL_in_eval = EVAL_NULL;
		493	PL_curpm = 0;
		494	PL_localizing = 0;
		495	PL_dirty = 0;
		496	PL_restartop = 0;
		497
		498	{
		499	dSP;
		500	LOGOP myop;
		501
		502	/* I have no idea why this is needed, but it is */
		503	PUSHMARK (SP);
		504
551	SvREFCNT_dec (GvAV (PL_defgv));	505	SvREFCNT_dec (GvAV (PL_defgv));
552	GvAV (PL_defgv) = coro->args; coro->args = 0;	506	GvAV (PL_defgv) = coro->args; coro->args = 0;
553		507
554	SPAGAIN;
555
556	Zero (&myop, 1, UNOP);	508	Zero (&myop, 1, LOGOP);
557	myop.op_next = Nullop;	509	myop.op_next = Nullop;
558	myop.op_flags = OPf_WANT_VOID;	510	myop.op_flags = OPf_WANT_VOID;
559		511
560	PL_op = (OP *)&myop;	512	PL_op = (OP *)&myop;
561		513
562	PUSHMARK(SP);	514	PUSHMARK (SP);
563	XPUSHs (sub_init);	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
564	PUTBACK;	516	PUTBACK;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	518	SPAGAIN;
		519	}
567		520
568	ENTER; /* necessary e.g. for dounwind */	521	ENTER; /* necessary e.g. for dounwind */
569	}	522	}
570		523
571	static void	524	static void
…		…
576	SvREFCNT_dec (coro_mortal);	529	SvREFCNT_dec (coro_mortal);
577	coro_mortal = 0;	530	coro_mortal = 0;
578	}	531	}
579	}	532	}
580		533
		534	static void NOINLINE
		535	prepare_cctx (coro_cctx *cctx)
		536	{
		537	dSP;
		538	LOGOP myop;
		539
		540	Zero (&myop, 1, LOGOP);
		541	myop.op_next = PL_op;
		542	myop.op_flags = OPf_WANT_VOID;
		543
		544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		545
		546	PUSHMARK (SP);
		547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		548	PUTBACK;
		549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		550	SPAGAIN;
		551	}
		552
581	static void	553	static void
582	coro_run (void *arg)	554	coro_run (void *arg)
583	{	555	{
		556	/* coro_run is the alternative epilogue of transfer() */
		557	UNLOCK;
		558
584	/*	559	/*
585	* this is a _very_ stripped down perl interpreter ;)	560	* this is a _very_ stripped down perl interpreter ;)
586	*/	561	*/
587	dTHX;
588	int ret;
589
590	UNLOCK;
591
592	PL_top_env = &PL_start_env;	562	PL_top_env = &PL_start_env;
593		563
594	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));	564	/* inject call to cctx_init */
595	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));	565	prepare_cctx ((coro_cctx *)arg);
596
597	/* continue at cctx_init, without entersub */
598	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
599		566
600	/* somebody will hit me for both perl_run and PL_restartop */	567	/* somebody will hit me for both perl_run and PL_restartop */
601	ret = perl_run (aTHX_ PERL_GET_CONTEXT);	568	perl_run (PL_curinterp);
602	printf ("ret %d\n", ret);//D
603		569
604	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
605	abort ();	571	abort ();
606	}	572	}
607		573
608	static coro_stack *	574	static coro_cctx *
609	stack_new ()	575	cctx_new ()
610	{	576	{
611	coro_stack *stack;	577	coro_cctx *cctx;
612		578
		579	++cctx_count;
		580
613	New (0, stack, 1, coro_stack);	581	New (0, cctx, 1, coro_cctx);
614		582
615	#if HAVE_MMAP	583	#if HAVE_MMAP
616		584
617	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
618	/* mmap suppsedly does allocate-on-write for us */	586	/* mmap suppsedly does allocate-on-write for us */
619	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
620		588
621	if (stack->sptr == (void *)-1)	589	if (cctx->sptr == (void *)-1)
622	{	590	{
623	perror ("FATAL: unable to mmap stack for coroutine");	591	perror ("FATAL: unable to mmap stack for coroutine");
624	_exit (EXIT_FAILURE);	592	_exit (EXIT_FAILURE);
625	}	593	}
626		594
627	# if STACKGUARD	595	# if STACKGUARD
628	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
629	# endif	597	# endif
630		598
631	#else	599	#else
632		600
633	stack->ssize = STACKSIZE * (long)sizeof (long);	601	cctx->ssize = STACKSIZE * (long)sizeof (long);
634	New (0, stack->sptr, STACKSIZE, long);	602	New (0, cctx->sptr, STACKSIZE, long);
635		603
636	if (!stack->sptr)	604	if (!cctx->sptr)
637	{	605	{
638	perror (stderr, "FATAL: unable to malloc stack for coroutine");	606	perror ("FATAL: unable to malloc stack for coroutine");
639	_exit (EXIT_FAILURE);	607	_exit (EXIT_FAILURE);
640	}	608	}
641		609
642	#endif	610	#endif
643		611
		612	#if USE_VALGRIND
		613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		615	cctx->ssize + (char *)cctx->sptr
		616	);
		617	#endif
		618
644	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
645		620
646	return stack;	621	return cctx;
647	}	622	}
648		623
649	static void	624	static void
650	stack_free (coro_stack *stack)	625	cctx_destroy (coro_cctx *cctx)
651	{	626	{
652	if (!stack \|\| stack == main_stack)	627	if (!cctx)
653	return;	628	return;
654		629
		630	--cctx_count;
		631
		632	#if USE_VALGRIND
		633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		634	#endif
		635
655	#if HAVE_MMAP	636	#if HAVE_MMAP
656	munmap (stack->sptr, stack->ssize);	637	munmap (cctx->sptr, cctx->ssize);
657	#else	638	#else
658	Safefree (stack->sptr);	639	Safefree (cctx->sptr);
659	#endif	640	#endif
660		641
661	Safefree (stack);	642	Safefree (cctx);
662	}	643	}
663		644
664	static coro_stack *stack_first;
665
666	static coro_stack *	645	static coro_cctx *
667	stack_get ()	646	cctx_get ()
668	{	647	{
669	coro_stack *stack;	648	coro_cctx *cctx;
670		649
671	if (stack_first)	650	if (cctx_first)
672	{	651	{
673	stack = stack_first;	652	cctx = cctx_first;
674	stack_first = stack->next;	653	cctx_first = cctx->next;
		654	--cctx_idle;
675	}	655	}
676	else	656	else
677	{	657	{
678	stack = stack_new ();	658	cctx = cctx_new ();
679	PL_op = PL_op->op_next;	659	PL_op = PL_op->op_next;
680	}	660	}
681		661
682	return stack;	662	return cctx;
683	}	663	}
684		664
685	static void	665	static void
686	stack_put (coro_stack *stack)	666	cctx_put (coro_cctx *cctx)
687	{	667	{
688	stack->next = stack_first;	668	/* free another cctx if overlimit */
689	stack_first = stack;	669	if (cctx_idle >= MAX_IDLE_CCTX)
		670	{
		671	coro_cctx *first = cctx_first;
		672	cctx_first = first->next;
		673	--cctx_idle;
		674
		675	assert (!first->inuse);
		676	cctx_destroy (first);
		677	}
		678
		679	++cctx_idle;
		680	cctx->next = cctx_first;
		681	cctx_first = cctx;
690	}	682	}
691		683
692	/* never call directly, always through the coro_state_transfer global variable */	684	/* never call directly, always through the coro_state_transfer global variable */
693	static void	685	static void NOINLINE
694	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	686	transfer (struct coro prev, struct coro next, int flags)
695	{	687	{
696	dSTACKLEVEL;	688	dSTACKLEVEL;
697		689
698	/* sometimes transfer is only called to set idle_sp */	690	/* sometimes transfer is only called to set idle_sp */
699	if (flags == TRANSFER_SET_STACKLEVEL)	691	if (flags == TRANSFER_SET_STACKLEVEL)
700	((coro_stack *)prev)->idle_sp = STACKLEVEL;	692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
701	else if (prev != next)	693	else if (prev != next)
702	{	694	{
703	coro_stack *prev__stack;	695	coro_cctx *prev__cctx;
		696
		697	if (prev->flags & CF_NEW)
		698	{
		699	/* create a new empty context */
		700	Newz (0, prev->cctx, 1, coro_cctx);
		701	prev->cctx->inuse = 1;
		702	prev->flags &= ~CF_NEW;
		703	prev->flags \|= CF_RUNNING;
		704	}
		705
		706	/TODO: must not croak here /
		707	if (!prev->flags & CF_RUNNING)
		708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		709
		710	if (next->flags & CF_RUNNING)
		711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		712
		713	prev->flags &= ~CF_RUNNING;
		714	next->flags \|= CF_RUNNING;
704		715
705	LOCK;	716	LOCK;
706		717
707	if (next->mainstack)	718	if (next->mainstack)
708	{	719	{
…		…
711	LOAD (next);	722	LOAD (next);
712	}	723	}
713	else	724	else
714	{	725	{
715	/* need to start coroutine */	726	/* need to start coroutine */
		727	assert (next->flags & CF_NEW);
		728	next->flags &= ~CF_NEW;
716	/* first get rid of the old state */	729	/* first get rid of the old state */
717	SAVE (prev, -1);	730	SAVE (prev, -1);
718	/* setup coroutine call */	731	/* setup coroutine call */
719	setup_coro (next);	732	setup_coro (next);
720	/* need a stack */	733	/* need a new stack */
721	next->stack = 0;	734	assert (!next->stack);
722	}	735	}
723		736
724	prev__stack = prev->stack;	737	prev__cctx = prev->cctx;
725		738
726	/* possibly "free" the stack */	739	/* possibly "free" the cctx */
727	if (prev__stack->idle_sp == STACKLEVEL)	740	if (prev__cctx->idle_sp == STACKLEVEL && 0)
728	{	741	{
729	stack_put (prev__stack);	742	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		743	assert (PL_top_env == prev__cctx->top_env);
		744
730	prev->stack = 0;	745	prev->cctx = 0;
		746
		747	cctx_put (prev__cctx);
		748	prev__cctx->inuse = 0;
731	}	749	}
732		750
733	if (!next->stack)	751	if (!next->cctx)
734	next->stack = stack_get ();
735
736	if (prev__stack != next->stack)
737	{	752	{
		753	next->cctx = cctx_get ();
		754	assert (!next->cctx->inuse);
		755	next->cctx->inuse = 1;
		756	}
		757
		758	if (prev__cctx != next->cctx)
		759	{
738	prev__stack->top_env = PL_top_env;	760	prev__cctx->top_env = PL_top_env;
739	PL_top_env = next->stack->top_env;	761	PL_top_env = next->cctx->top_env;
740	printf ("stacksw %p %p\n", prev__stack->idle_sp, next->stack->idle_sp);//D
741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	762	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	763	}
743		764
744	free_coro_mortal ();	765	free_coro_mortal ();
745		766
746	UNLOCK;	767	UNLOCK;
747	}	768	}
748	}	769	}
749
750	/* use this function pointer to call the above function */
751	/* this is done to increase chances of the compiler not inlining the call */
752	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
753	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
754		770
755	struct transfer_args	771	struct transfer_args
756	{	772	{
757	struct coro prev, next;	773	struct coro prev, next;
758	int flags;	774	int flags;
759	};	775	};
760		776
761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	777	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
762		778
763	static void	779	static void
764	coro_state_destroy (struct coro *coro)	780	coro_state_destroy (struct coro *coro)
765	{	781	{
766	if (coro->refcnt--)	782	if (coro->refcnt--)
…		…
768		784
769	if (coro->mainstack && coro->mainstack != main_mainstack)	785	if (coro->mainstack && coro->mainstack != main_mainstack)
770	{	786	{
771	struct coro temp;	787	struct coro temp;
772		788
		789	if (coro->flags & CF_RUNNING)
		790	croak ("FATAL: tried to destroy currently running coroutine");
		791
773	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	792	SAVE ((&temp), TRANSFER_SAVE_ALL);
774	LOAD (aTHX_ coro);	793	LOAD (coro);
775		794
776	destroy_stacks (aTHX);	795	coro_destroy_stacks ();
777		796
778	LOAD ((&temp)); /* this will get rid of defsv etc.. */	797	LOAD ((&temp)); /* this will get rid of defsv etc.. */
779		798
780	coro->mainstack = 0;	799	coro->mainstack = 0;
781	}	800	}
782		801
783	stack_free (coro->stack);	802	cctx_destroy (coro->cctx);
784	SvREFCNT_dec (coro->args);	803	SvREFCNT_dec (coro->args);
785	Safefree (coro);	804	Safefree (coro);
786	}	805	}
787		806
788	static int	807	static int
789	coro_state_clear (SV sv, MAGIC mg)	808	coro_state_clear (pTHX_ SV sv, MAGIC mg)
790	{	809	{
791	struct coro coro = (struct coro )mg->mg_ptr;	810	struct coro coro = (struct coro )mg->mg_ptr;
792	mg->mg_ptr = 0;	811	mg->mg_ptr = 0;
793		812
794	coro_state_destroy (coro);	813	coro_state_destroy (coro);
795		814
796	return 0;	815	return 0;
797	}	816	}
798		817
799	static int	818	static int
800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	819	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
801	{	820	{
802	struct coro coro = (struct coro )mg->mg_ptr;	821	struct coro coro = (struct coro )mg->mg_ptr;
803		822
804	++coro->refcnt;	823	++coro->refcnt;
805		824
806	return 0;	825	return 0;
807	}	826	}
808		827
809	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	828	static MGVTBL coro_state_vtbl = {
		829	0, 0, 0, 0,
		830	coro_state_clear,
		831	0,
		832	#ifdef MGf_DUP
		833	coro_state_dup,
		834	#else
		835	# define MGf_DUP 0
		836	#endif
		837	};
810		838
811	static struct coro *	839	static struct coro *
812	SvSTATE (SV *coro)	840	SvSTATE (SV *coro)
813	{	841	{
814	HV *stash;	842	HV *stash;
…		…
829	assert (mg->mg_type == PERL_MAGIC_ext);	857	assert (mg->mg_type == PERL_MAGIC_ext);
830	return (struct coro *)mg->mg_ptr;	858	return (struct coro *)mg->mg_ptr;
831	}	859	}
832		860
833	static void	861	static void
834	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	862	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
835	{	863	{
836	ta->prev = SvSTATE (prev);	864	ta->prev = SvSTATE (prev);
837	ta->next = SvSTATE (next);	865	ta->next = SvSTATE (next);
838	ta->flags = flags;	866	ta->flags = flags;
839	}	867	}
840		868
841	static void	869	static void
842	api_transfer (SV prev, SV next, int flags)	870	api_transfer (SV prev, SV next, int flags)
843	{	871	{
844	dTHX;
845	struct transfer_args ta;	872	struct transfer_args ta;
846		873
847	prepare_transfer (aTHX_ &ta, prev, next, flags);	874	prepare_transfer (&ta, prev, next, flags);
848	TRANSFER (ta);	875	TRANSFER (ta);
849	}	876	}
850		877
851	/ Coro ******************************************************************/	878	/ Coro ******************************************************************/
852		879
…		…
856	#define PRIO_LOW -1	883	#define PRIO_LOW -1
857	#define PRIO_IDLE -3	884	#define PRIO_IDLE -3
858	#define PRIO_MIN -4	885	#define PRIO_MIN -4
859		886
860	/* for Coro.pm */	887	/* for Coro.pm */
861	static GV coro_current, coro_idle;	888	static SV *coro_current;
862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	889	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
863	static int coro_nready;	890	static int coro_nready;
864		891
865	static void	892	static void
866	coro_enq (pTHX_ SV *sv)	893	coro_enq (SV *coro_sv)
867	{	894	{
868	int prio;
869
870	if (SvTYPE (sv) != SVt_PVHV)
871	croak ("Coro::ready tried to enqueue something that is not a coroutine");
872
873	prio = SvSTATE (sv)->prio;
874
875	av_push (coro_ready [prio - PRIO_MIN], sv);	895	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876	coro_nready++;	896	coro_nready++;
877	}	897	}
878		898
879	static SV *	899	static SV *
880	coro_deq (pTHX_ int min_prio)	900	coro_deq (int min_prio)
881	{	901	{
882	int prio = PRIO_MAX - PRIO_MIN;	902	int prio = PRIO_MAX - PRIO_MIN;
883		903
884	min_prio -= PRIO_MIN;	904	min_prio -= PRIO_MIN;
885	if (min_prio < 0)	905	if (min_prio < 0)
…		…
893	}	913	}
894		914
895	return 0;	915	return 0;
896	}	916	}
897		917
898	static void	918	static int
899	api_ready (SV *coro)	919	api_ready (SV *coro_sv)
900	{	920	{
901	dTHX;	921	struct coro *coro;
902		922
903	if (SvROK (coro))	923	if (SvROK (coro_sv))
904	coro = SvRV (coro);	924	coro_sv = SvRV (coro_sv);
		925
		926	coro = SvSTATE (coro_sv);
		927
		928	if (coro->flags & CF_READY)
		929	return 0;
		930
		931	#if 0 /* this is actually harmless */
		932	if (coro->flags & CF_RUNNING)
		933	croak ("Coro::ready called on currently running coroutine");
		934	#endif
		935
		936	coro->flags \|= CF_READY;
905		937
906	LOCK;	938	LOCK;
907	coro_enq (aTHX_ SvREFCNT_inc (coro));	939	coro_enq (SvREFCNT_inc (coro_sv));
908	UNLOCK;	940	UNLOCK;
909	}
910		941
		942	return 1;
		943	}
		944
911	static void	945	static int
		946	api_is_ready (SV *coro_sv)
		947	{
		948	return !!SvSTATE (coro_sv)->flags & CF_READY;
		949	}
		950
		951	static void
912	prepare_schedule (aTHX_ struct transfer_args *ta)	952	prepare_schedule (struct transfer_args *ta)
913	{	953	{
914	SV current, prev, *next;	954	SV prev, next;
915
916	LOCK;
917
918	current = GvSV (coro_current);
919		955
920	for (;;)	956	for (;;)
921	{	957	{
922	LOCK;	958	LOCK;
923
924	next = coro_deq (aTHX_ PRIO_MIN);	959	next = coro_deq (PRIO_MIN);
		960	UNLOCK;
925		961
926	if (next)	962	if (next)
927	break;	963	break;
928		964
929	UNLOCK;
930
931	{	965	{
932	dSP;	966	dSP;
933		967
934	ENTER;	968	ENTER;
935	SAVETMPS;	969	SAVETMPS;
936		970
937	PUSHMARK (SP);	971	PUSHMARK (SP);
938	PUTBACK;	972	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);	973	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
940		974
941	FREETMPS;	975	FREETMPS;
942	LEAVE;	976	LEAVE;
943	}	977	}
944	}	978	}
945		979
946	prev = SvRV (current);	980	prev = SvRV (coro_current);
947	SvRV (current) = next;	981	SvRV_set (coro_current, next);
948		982
949	/* free this only after the transfer */	983	/* free this only after the transfer */
		984	LOCK;
950	free_coro_mortal ();	985	free_coro_mortal ();
		986	UNLOCK;
951	coro_mortal = prev;	987	coro_mortal = prev;
952		988
		989	assert (!SvROK(prev));//D
		990	assert (!SvROK(next));//D
		991
953	ta->prev = SvSTATE (prev);	992	ta->prev = SvSTATE (prev);
954	ta->next = SvSTATE (next);	993	ta->next = SvSTATE (next);
955	ta->flags = TRANSFER_SAVE_ALL;	994	ta->flags = TRANSFER_SAVE_ALL;
956		995
957	UNLOCK;	996	assert (ta->flags & CF_READY);
		997	ta->next->flags &= ~CF_READY;
958	}	998	}
959		999
960	static void	1000	static void
961	prepare_cede (aTHX_ struct transfer_args *ta)	1001	prepare_cede (struct transfer_args *ta)
962	{	1002	{
963	LOCK;	1003	api_ready (coro_current);
964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966		1004
967	prepare_schedule (ta);	1005	prepare_schedule (ta);
968	}	1006	}
969		1007
970	static void	1008	static void
971	api_schedule (void)	1009	api_schedule (void)
972	{	1010	{
973	dTHX;
974	struct transfer_args ta;	1011	struct transfer_args ta;
975		1012
976	prepare_schedule (&ta);	1013	prepare_schedule (&ta);
977	TRANSFER (ta);	1014	TRANSFER (ta);
978	}	1015	}
979		1016
980	static void	1017	static void
981	api_cede (void)	1018	api_cede (void)
982	{	1019	{
983	dTHX;
984	struct transfer_args ta;	1020	struct transfer_args ta;
985		1021
986	prepare_cede (&ta);	1022	prepare_cede (&ta);
987	TRANSFER (ta);	1023	TRANSFER (ta);
988	}	1024	}
…		…
1007	main_mainstack = PL_mainstack;	1043	main_mainstack = PL_mainstack;
1008		1044
1009	coroapi.ver = CORO_API_VERSION;	1045	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1046	coroapi.transfer = api_transfer;
1011		1047
1012	Newz (0, main_stack, 1, coro_stack);
1013	main_stack->idle_sp = (void *)-1;
1014
1015	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1048	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1016	}	1049	}
1017		1050
1018	SV *	1051	SV *
1019	new (char *klass, ...)	1052	new (char *klass, ...)
…		…
1023	HV *hv;	1056	HV *hv;
1024	int i;	1057	int i;
1025		1058
1026	Newz (0, coro, 1, struct coro);	1059	Newz (0, coro, 1, struct coro);
1027	coro->args = newAV ();	1060	coro->args = newAV ();
		1061	coro->flags = CF_NEW;
1028		1062
1029	hv = newHV ();	1063	hv = newHV ();
1030	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1064	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1031	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1065	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1032		1066
1033	for (i = 1; i < items; i++)	1067	for (i = 1; i < items; i++)
1034	av_push (coro->args, newSVsv (ST (i)));	1068	av_push (coro->args, newSVsv (ST (i)));
1035
1036	coro->stack = main_stack;
1037	/coro->mainstack = 0; //actual work is done inside transfer /
1038	/coro->stack = 0;/
1039	}	1069	}
1040	OUTPUT:	1070	OUTPUT:
1041	RETVAL	1071	RETVAL
1042		1072
1043	void	1073	void
…		…
1052	struct transfer_args ta;	1082	struct transfer_args ta;
1053		1083
1054	switch (ix)	1084	switch (ix)
1055	{	1085	{
1056	case 0:	1086	case 0:
1057	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1087	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1058	ta.next = 0;	1088	ta.next = 0;
1059	ta.flags = TRANSFER_SET_STACKLEVEL;	1089	ta.flags = TRANSFER_SET_STACKLEVEL;
1060	break;	1090	break;
1061		1091
1062	case 1:	1092	case 1:
1063	if (items != 3)	1093	if (items != 3)
1064	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1094	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1065		1095
1066	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1096	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1067	break;	1097	break;
1068		1098
1069	case 2:	1099	case 2:
…		…
1079	SV *yieldstack;	1109	SV *yieldstack;
1080	SV *sv;	1110	SV *sv;
1081	AV *defav = GvAV (PL_defgv);	1111	AV *defav = GvAV (PL_defgv);
1082		1112
1083	yieldstack = *hv_fetch (	1113	yieldstack = *hv_fetch (
1084	(HV *)SvRV (GvSV (coro_current)),	1114	(HV *)SvRV (coro_current),
1085	"yieldstack", sizeof ("yieldstack") - 1,	1115	"yieldstack", sizeof ("yieldstack") - 1,
1086	0	1116	0
1087	);	1117	);
1088		1118
1089	/* set up @_ -- ugly */	1119	/* set up @_ -- ugly */
…		…
1116	++coro_src->refcnt;	1146	++coro_src->refcnt;
1117	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1147	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1118	}	1148	}
1119		1149
1120	void	1150	void
1121	_nonlocal_goto (IV nextop)
1122	CODE:
1123	/* uuh, somebody will kill me again for this */
1124	PL_op->op_next = INT2PTR (OP *, nextop);
1125
1126	void
1127	_exit (code)	1151	_exit (code)
1128	int code	1152	int code
1129	PROTOTYPE: $	1153	PROTOTYPE: $
1130	CODE:	1154	CODE:
1131	_exit (code);	1155	_exit (code);
		1156
		1157	int
		1158	cctx_count ()
		1159	CODE:
		1160	RETVAL = cctx_count;
		1161	OUTPUT:
		1162	RETVAL
		1163
		1164	int
		1165	cctx_idle ()
		1166	CODE:
		1167	RETVAL = cctx_idle;
		1168	OUTPUT:
		1169	RETVAL
1132		1170
1133	MODULE = Coro::State PACKAGE = Coro	1171	MODULE = Coro::State PACKAGE = Coro
1134		1172
1135	BOOT:	1173	BOOT:
1136	{	1174	{
…		…
1143	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1144	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1145	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1146	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1147		1185
1148	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1186	coro_current = get_sv ("Coro::current", FALSE);
1149	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1187	SvREADONLY_on (coro_current);
1150		1188
1151	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1152	coro_ready[i] = newAV ();	1190	coro_ready[i] = newAV ();
1153		1191
1154	{	1192	{
1155	SV *sv = perl_get_sv("Coro::API", 1);	1193	SV *sv = perl_get_sv("Coro::API", 1);
1156		1194
1157	coroapi.schedule = api_schedule;	1195	coroapi.schedule = api_schedule;
1158	coroapi.cede = api_cede;	1196	coroapi.cede = api_cede;
1159	coroapi.ready = api_ready;	1197	coroapi.ready = api_ready;
		1198	coroapi.is_ready = api_is_ready;
1160	coroapi.nready = &coro_nready;	1199	coroapi.nready = &coro_nready;
1161	coroapi.current = coro_current;	1200	coroapi.current = coro_current;
1162		1201
1163	GCoroAPI = &coroapi;	1202	GCoroAPI = &coroapi;
1164	sv_setiv (sv, (IV)&coroapi);	1203	sv_setiv (sv, (IV)&coroapi);
…		…
1184		1223
1185	coro->prio = newprio;	1224	coro->prio = newprio;
1186	}	1225	}
1187	}	1226	}
1188		1227
1189	void	1228	SV *
1190	ready (SV *self)	1229	ready (SV *self)
1191	PROTOTYPE: $	1230	PROTOTYPE: $
1192	CODE:	1231	CODE:
1193	api_ready (self);	1232	RETVAL = boolSV (api_ready (self));
		1233	OUTPUT:
		1234	RETVAL
		1235
		1236	SV *
		1237	is_ready (SV *self)
		1238	PROTOTYPE: $
		1239	CODE:
		1240	RETVAL = boolSV (api_is_ready (self));
		1241	OUTPUT:
		1242	RETVAL
1194		1243
1195	int	1244	int
1196	nready (...)	1245	nready (...)
1197	PROTOTYPE:	1246	PROTOTYPE:
1198	CODE:	1247	CODE:
1199	RETVAL = coro_nready;	1248	RETVAL = coro_nready;
1200	OUTPUT:	1249	OUTPUT:
1201	RETVAL	1250	RETVAL
1202		1251
		1252	void
		1253	_set_current (SV *current)
		1254	PROTOTYPE: $
		1255	CODE:
		1256	SvREFCNT_dec (SvRV (coro_current));
		1257	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1258
1203	MODULE = Coro::State PACKAGE = Coro::AIO	1259	MODULE = Coro::State PACKAGE = Coro::AIO
1204		1260
1205	SV *	1261	SV *
1206	_get_state ()	1262	_get_state ()
1207	CODE:	1263	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC vs. Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC vs.
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC